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AS12687User Association of Ukrainian Research and Academic Network URAN

UkraineRegistryRIPE NCCTypeEyeball

As of 10th November 2026, AS12687 (User Association of Ukrainian Research…), an access network registered in Ukraine with RIPE NCC, originates 7 IPv4 prefixes covering 4.9k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 16,135th-largest of the 80,733 networks we see originating IPv4, and the 223rd-largest of 1,549 in Ukraine. It is seen behind 10 upstream networks, most often AS9002 (RETN Limited) and AS21320 (GEANT Vereniging), and in front of 16 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 88% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

7

IPv6 prefixes

1

IPv4 addresses

4.9k

IPv6 /64s

4.3B

Upstream graph

The networks AS12687 is seen behind, one and two hops out, drawn from real AS paths.

AS12687Toward the internet core
Upstream graph for AS12687: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12687User Association …This networkAS3326Datagroup PJSCAS6939Hurricane Electri…AS9002RETN LimitedAS20965GEANT VerenigingAS21320GEANT VerenigingAS20130Depaul UniversityAS132337AxclusiveAS6667Elisa OyjAS293ESnetAS3356Lumen (Level 3)AS11537Internet2AS2603NORDUnet

Networks observed one and two hops upstream of AS12687 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

69

adjacent networks

Upstreams
1014%
Peers
4362%
Downstreams
1623%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS12687
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer4,07693
AS21320GEANT VerenigingNLPeer47533
AS6939Hurricane Electric LLCUSPeer41868
AS20965GEANT VerenigingNLPeer712
AS3326Datagroup PJSCUAPeer2222
AS24482SG.GSSGPeer142
AS49544i3D.net B.VNLPeer131
AS24940Hetzner Online GmbHDEPeer102
AS132337AxclusiveSGAdjacent71
AS9199RENAM Public AssociationMDPeer51

Prefixes

The largest blocks AS12687 originates, widest first.

Largest prefixes originated by AS12687
PrefixAddressesVisibility
212.111.192.0/212k76/76
212.111.208.0/221k76/76
212.111.202.0/2351276/76
212.111.212.0/2351276/76
212.111.201.0/2425676/76
212.111.203.0/242562/76
212.111.206.0/2425676/76
2a01:5c40::/324.3B × /6461/63

Routing health

How AS12687's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%8
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more87.5%7
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%12.5%1

Prefix sizes

IPv4 — 7 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS12687 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.